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Double Photoionisation Spectra of Molecules$
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John Eland and Raimund Feifel

Print publication date: 2017

Print ISBN-13: 9780198788980

Published to Oxford Scholarship Online: March 2018

DOI: 10.1093/oso/9780198788980.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 26 September 2021

Triatomic molecules

Triatomic molecules

Chapter:
(p.53) Chapter 3 Triatomic molecules
Source:
Double Photoionisation Spectra of Molecules
Author(s):

John H. D. Eland

Raimund Feifel

Publisher:
Oxford University Press
DOI:10.1093/oso/9780198788980.003.0004

Double ionisation of the triatomic molecules presented in this chapter shows an added degree of complexity. Besides potentially having many more electrons, they have three vibrational degrees of freedom (three normal modes) instead of the single one in a diatomic molecule. For asymmetric and bent triatomic molecules multiple modes can be excited, so the spectral bands may be congested in all forms of electronic spectra, including double ionisation. Double photoionisation spectra of H2O, H2S, HCN, CO2, N2O, OCS, CS2, BrCN, ICN, HgCl2, NO2, and SO2 are presented with analysis to identify the electronic states of the doubly charged ions. The order of the molecules in this chapter is set first by the number of valence electrons, then by the molecular weight.

Keywords:   double ionisation, triatomic molecules, H2O, CO2, H2S, N2O, NO2, OCS, CS2

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